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Lecture 13: Taylor and Maclaurin Series - NU Math Sites
is a power series expansion of the exponential function f (x ) = ex. The power series is centered at 0. The derivatives f (k )(x ) = ex, so f (k )(0) = e0 = 1. So the Taylor series of the function f at 0, or the Maclaurin series of f , is X1 n =0 x n n !; which agrees with the power series de nition of the exponential function. De nition.
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